Improvement in harvesters



UNITED STATES PATENT OFFICE.

DANIEL D. GI'IT, OF ARENDTSVILLE, PENNSYLVANIA.

IMPROVEMENT IN HARVESTERS.

Specification forming part of Letters Patent No. 52,843, dated February27, 1866.

J f all whom it may concern:

Be it known that I, DANIEL D. GITT, ot' Arendtsville, in the county ofAdams and State of Pennsylvania, have invented a new making a part ofthis specification, in which- Figure l is a perspective view of myinvention. Fig. 2 is afront elevation thereof. Fig. 3 is a plan view.Fig. 4. is a perspective view of the slide. Fig. 5 is a perspective viewof the inner end of the sickle-bar.

Similar letters of reference indicate corresponding parts in the severalfigures.

The object of this invention is to prevent binding or undue strain atthe junction of the pitman-rod with the sickle-bar and the crankwheel,in consequence of the backward thrusts of the outer end of the cuttingapparatus and the variations thereof from its true position. At thesaine time I provide for allowing the cutting apparatus to have perfectfreedom to accommodate itself to the undulations of the surface overwhich the machine moves, as will be hereinafter described.

To enable others skilled in the art to understand my invention, I willdescribe its construction and operation.

In the accompanying drawings, A represents a pitman-rod forcommunicating a reciprocating motion to the sickle-bar S from a crank oran eccentric wheel on the drivingshaft of the harvester. The upper endof the pitman-rod A has a cylindrical neck formed on it, whichterminates in a sphere or ball, a, (shown in Fig. 2.) This ball a isfitted into a socket which is formed in the enlarged head B', throughwhich head is a hole, b, for receivin g the wrist-pin or crank-pin ofthe eccentric wheel. The head B is divided centrally for the purpose ofreceiving the ball a, and each half of this head is constructed with aprojecting jaw, b', which extends over the cylindrical portion of thepitman-rod A near the ball a, and prevents an up-and-down movement atthis point. A rolling and horizontal play will be allowed at theball-andsocket `joint, but no vertical play is allowed. If desirable,the pin which enters the head B at b may be kept oiled byinserting asponge soaked in oil into the perforation b2, (shown in Figs. 1 and 2.)

The lower end of the pitman-rod A has a horizontal pin, e, projecting atright angles from its back edge, which pin enters the elevated portionof a slide, O, and is connected to this slide so that it will rockfreely by a pin, f,which enters an annular groove or notch formed insaid pin e. The slide C is composed of an elevated and a depressedportion with a flat top and bottom and a curved back edge, as shown inFigs. 3 and 4. From the bottom of this slide G a cylindrical pin, g,pro-.

jects, which pin may be formed on or otherwise applied to the slide. Theslide C is arranged to work between two guides, D D', the upper one ofwhich serves to keep it down upon the lower guide or bearing, D, andalso upon the slide-rest D2, between which latter and the forward ed geof the guide D is a space for receiving the elevation g that is formedon-the sickle-bar S. lnto this elevation g a hole is made for receivingthe vertical pin g, which projects from the bottom of the slide C. Theinner end of the sickle-bar S is held in place by means of a recesswhich is formed beneath the surface upon which the slide is supported,as clearly shown in Figs. 1 and 2.

It will be seen from this description thatl the lower end of thepitman-rod is not connected directly to the sickle-bar S, but to aslide, C, which is supported by means of bearings above and below it,and to this slide the pitman-rod is so pivoted that no strain or twistcan be impartedto the sickle. The vertical pivot-joint by which theslide is connected to the sickle, together with the curved form of theback edge of the slide, will allow the latterto vibrate about its pointof connection with the sickle, and at the same time to slide freely backand forth between its bearings.

The guide-box for the slide Gand inner end of the sickle-bar may besecured to or formed have a space between them, so as to allow side playof the pitman-rod and prevent up-anddown play thereof, with theball-and-socket ioint c B', substantially in the manner and for thepurpose described.

2. Connecting the lower end of the pitmanrod A to a reciprocating1slide, (J, which is allowed to rock about a vertical pin, g, thatconnects said slide to the sickle S, substantially as described.

3. The combination of the horizontallybscillatin g slide C, with itsupper and lower bear ings D' D,and the elevated guide g on'the sickle,substantially as described.

4. The combination of a jointed pitman, A

DANL. D. GITT.

Witnesses:

R. T. CAMPBELL, EDW. t SOHAFER.

